25 



Experiment in Houston County, 1911 

 Do til an 



KIND OF FERTILIZER 







©•F-t 



Qh 3 



1 



2 

 3 

 4 



^{ 



^! 



7 

 8-i 



Lbs. 

 200 

 200 



240 

 200 

 240 

 200 

 200 



240 

 200 

 200 

 240 

 200 



C. S. Meal 



Kainit 



No fertilizer 



Acid phosphate. 



C. S. Meal 



Acid phosphate. 



C. S. Meal 



Kainit 



No fertilizer 



Acid phosphate. 



Kainit 



C. S. Meal 



Acid phosphate. 

 Kainit 



-$8 12 

 -0.40 



"-3"64 

 -2.76 



-3.44 



0.76 

 -2.24 



Covington County, 1 Mile Southeast of 0pp. 



Ben J. Barnes, 1913. 



Gray sandy loam, with stiffer yellow subsoil. 



This experiment was made on poor, gray sandj-^ up- 

 land which had been cleared of its long leaf pine for 

 eight years. The same plots were also used for fertilizer 

 experiments with peanuts at Opp in 1914. 



Similar soil on the same farm but on different plots 

 was employed for this test in 1915. 



In 1913 the largest net profit, $28.32, above the cost 

 of fertilizer, was afforded by Plot 4, fertilized as fol- 

 lows: 



240 pounds acid phosphate per acre. 



200 pounds kainit per acre. 



600 pounds slacked lime per acre. 



Most of tliis profit was due to lime, the separate 

 effect of 600 pounds of which was to increase the 

 yield of dry nuts by 538 pounds per acre. This is a 

 net profit of $18.52 per acre, after deducting the cost 

 of 600 pounds of slacked lime at $10.00 per ton. 



